I'd like to thank Mark for her patience and her videos tucked into odd corners at the Henry Gallery.

If Buster Keaton were alive, he'd recognize Mark's mobilizing impulse and take credit for inspiring it. Like him, artists in Mark's generation back-foot fractionally off the normal. From that vantage point, what everybody else takes for granted becomes new and open to scrutiny.

Keaton would appreciate her videos, drawings, wallpaper, sculptures and photographs, but at least initially, artists and art audiences who emerged in the late 1960s and 1970s find her work more than a little odd.

"Demonstration" took place in Toronto in front of The Power Plant on opening night. As taxis delivered the chic to the party, Mark's friends confronted them with the new militancy. Protest signs were blank and so were the protests.

"What do we want?"

"Nothing!"

"When do we want it?"

"Never!"

Mark is messing with the previous generation's script.

"Hiccup" came from a 30-day, 15-minute performance on the steps of Toronto's Central Tech High School. Every day at the same time, she did the same thing. Cueing herself through a headset, she rubbed her neck at the same time, sipped coffee, adjusted her cap and shrugged.

"Hiccup" is a dance with the audience. Her repetitions set off the audience's differences and inner similarities. Every day, different people did the same thing. They ignored her.

"Crosswalk" has a similar structure. She shot it on the roof, assuming the angle of a surveillance camera, as a young man waited for the light to change. Once it did, he hoofed it fast back and forth across the street until the light changed again. Nobody asked what he was doing.

"33 Minute Stare" features Mark's head on video, looking at you in the elevator. That "pop" you hear is her breaking into your body bubble.

"Sniff" is dedicated to the junky impulse. Mark's cat, Roonie, doesn't want to sniff at every single thing Mark holds out to him. We see him try to resist before giving in and then pretending he didn't. There's an empty chair in a 12 Step meeting waiting for this cat.

Think of the 1960s/1970s: Bruce Nauman's deadly clown antics, Vito Acconci imitating a stalker, Chris Burden crawling through broken glass and Adrian Piper drooling on the bus. Compare them to the droll crowd. Sincerity is the new edgy, and Mark is one of the artists giving us reason to be glad.